Don't shift/push the samples array
Don't shift/push the samples array

- just index % 5 into it since we have a fixed size array
- rename LAST_UTILS_NUM to NUM_SAMPLES for more readability

MasterDuke17/rakudo,awwaiid/rakudo,awwaiid/rakudo,Gnouc/rakudo,labster/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tbrowder/rakudo,salortiz/rakudo,nbrown/rakudo,tony-o/rakudo,tony-o/rakudo,salortiz/rakudo,tony-o/rakudo,nbrown/rakudo,tony-o/rakudo,salortiz/rakudo,rakudo/rakudo,rakudo/rakudo,Gnouc/rakudo,labster/rakudo,Gnouc/rakudo,salortiz/rakudo,rakudo/rakudo,lucasbuchala/rakudo,tony-o/rakudo,nbrown/rakudo,labster/rakudo,tbrowder/rakudo,tbrowder/rakudo,awwaiid/rakudo,softmoth/rakudo,lucasbuchala/rakudo,labster/rakudo,nbrown/rakudo,softmoth/rakudo,Gnouc/rakudo,rakudo/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,labster/rakudo,awwaiid/rakudo,tony-o/rakudo,Gnouc/rakudo,softmoth/rakudo,nbrown/rakudo,tbrowder/rakudo,softmoth/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,rakudo/rakudo,salortiz/rakudo,nbrown/rakudo,lucasbuchala/rakudo,labster/rakudo,MasterDuke17/rakudo,awwaiid/rakudo,salortiz/rakudo,rakudo/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,softmoth/rakudo,MasterDuke17/rakudo